Gris-Nez 
(grē-nā), Cape
(grē-nā), Cape A promontory of northern France extending into the Strait of Dover near Calais. It is the closest point to Britain on the European mainland.
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- xolo
- xoloitzcuintle
- xoloitzcuintli
- XOR
- Xosa
- Xosa
- XPS
- x-radiation
- X-rated
- x-ray
- x-ray astronomy
- x-ray burster
- x-ray crystallography
- x-ray diffraction
- x-ray fish
- x-ray microscope
- x-ray photoemission spectroscopy
- x-ray spectrometer
- x-ray spectrometry
- x-ray spectroscope
- x-ray spectroscopy
- x-ray star
- x-ray therapy
- x-ray tube